A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6320-01-409-1388
NSN 6145-01-368-0761
NSN 6650-00-165-5723
NSN 5915-01-342-1678
NSN 5905-01-408-1380
NSN 6645-01-088-5244
NSN 6620-00-053-9568
NSN 6650-01-145-5173
NSN 5965-01-200-6613
NSN 6685-00-715-3291
NSN 4140-01-432-8771
NSN 6105-01-229-8842